JP5629768B2 - External terminal device for permanent catheter - Google Patents

Description

  The present invention relates to an external terminal device for a permanent catheter, for example useful for dialysis and chemotherapy, and to a method for implanting the device in a patient's body.

  In the prior art, several documents disclose catheters with connection devices located outside the patient's body, particularly with respect to the problem of maintaining a sterile condition.

  Patent EP 0 070 087 discloses a connector member. The connector member includes a valve suitable for ultraviolet germicidal irradiation, and the connector member can connect a permanent catheter to an external device. This patent document describes materials used to form connector members, materials that must be transparent to ultraviolet light, and at the same time, materials that must be resistant to ultraviolet light. doing. However, this patent document does not disclose any closing means for closing the connector member when the connector member is not connected to an external device, and replacing the permanent catheter in an emergency. There is no disclosure of any issues related to doing.

  Patent EP 0 227 219 discloses an occlusion plug for the end of a permanent catheter. This closing plug is formed by two detachable members, one member is a member for maintaining the outside of the end portion in a sterile condition, and the other member is a sterile state for the inside of the end portion. It is a member for maintaining. For this purpose, a material impregnated with a bactericidal liquid is used.

  Patent US 5,324,274 describes a dual lumen vascular access catheter having an elongated main body defining a first lumen and a second lumen and a connection for attachment to the main body And a connecting structure having means. The first channel and the second channel extend from the first lumen and the second lumen, respectively, and attach the catheter to the instrument. Further, first and second rotary valves are disposed in the first channel and the second channel. These valves have a rotatable operating member, so that the position of the valve can be displayed visually. US 5,324,274 addresses the connection between equipment and non-permanent catheters and does not address the issues of implantation and replacement.

Patent EP 0 070 087 Patent EP 0 227 219 Patent US 5,324,274

  The present invention relates to permanent catheters used, for example, in dialysis and chemotherapy. Such a catheter is formed from a deformable and biocompatible material and can have a single lumen, or a dual lumen or two flow channels. Can have. In current permanent catheters, a so-called catheter cuff having a thickness is provided near the outer end. A cuff, which can be formed from pure silicone or from Dacron® filaments, is placed in the subcutaneous tissue when the catheter is implanted. The cuff functions to anchor the catheter to the subcutaneous tissue as the fibrous tissue grows around the catheter due to a biological reaction. This prevents or limits catheter misalignment or deviation. In the case of cuffs formed from Dacron®, the subcutaneous tissue response to the cuff also constitutes an effective obstacle to the progression of bacteria along the catheter and the infection Limit. The outermost end of the catheter beyond the cuff is sometimes provided with an end made of a material different from the catheter. In any case, the ends are biocompatible and elastic. At the end, a standard connector known as “Lure Lock” is provided. The luer lock allows the catheter to be connected to a blood line of equipment such as dialysis equipment.

  Such ends are provided with suitable threaded closure plugs and small clips. When the clip is occluded, the clip clamps the end, thereby achieving a safer occlusion. Eventually, the clip will cause the end material to break in some cases.

  An assembly consisting of a catheter, cuff, end and clip has several disadvantages. For example, the disadvantage is that the catheter and end are chronically exposed to the saprophytic bacterial flora present in the subcutaneous tissue in the patient. So far, permanent catheters of the above type are fixed subcutaneously by a cuff. In the extracorporeal part of the catheter, permanent catheters are easily infected by a range of pathogens because of the ease with which the catheter must be handled by nursing.

  Initially, bacterial flora propagates and infects the catheter, first in the exit area from the subcutaneous, then in the internal track in the subcutaneous tunnel where the catheter enters the vein. The only way to prevent the actual progression of sepsis is to change the catheter. Due to the fact that one end of the catheter is integral with the cuff and the other end of the catheter is incorporated into the subcutaneous reactive tissue, the catheter must be replaced by surgery. I do not get. In fact, the cuff that is integral to the catheter must be removed from the subcutaneous tissue.

  Discomfort to the patient due to the end being too long protected by gauze cannot be ignored. In practice, such a part constituted by the end of the catheter or a luer lock connector can be rolled into the garment. Such an immovable end can impair the appearance and can cause damage to the end during sleep and inadvertently in situations where no help is available.

  The present invention aims to overcome the above-mentioned drawbacks and problems.

  It is an object of the present invention to provide an external terminal device for a permanent catheter, such that the catheter can be disconnected from the external environment and further the catheter can be protected from germs.

Another important object of the present invention is to provide an external terminal device for a permanent catheter such that the permanent catheter can be replaced in a simple manner and without performing surgery.

  It is a further object of the present invention to provide an external terminal device for a permanent catheter such that the catheter does not include an occlusion clamp and does not include other mechanisms for occlusion. Furthermore, it is an object of the present invention to provide an external terminal device for a permanent catheter such that no aesthetically undesirable dangerous appendages are suspended from the patient's chest.

  Another object of the present invention is to form a small device that can be easily hidden, is reliable, and has a good psychological impact on the patient.

  In order to achieve the above object, in a first aspect of the invention, an external terminal device for a permanent catheter, which can be connected to at least one catheter on the one hand and on the other hand , Comprising a container that can be connected to a closure lid with a disposable absorbent material impregnated with a bactericide, the container contains two taps, A knob operable from the outside of the container is provided, and the tap comprises on the one hand a first connector for connection to the catheter and on the other hand protrudes from the container for connection to the external device. A first connector connected to the catheter by at least one connecting member, the connecting member protruding from the container, A disposable cuff that holds a subcutaneous cuff configured to be placed within the subcutaneous tissue of a person's body on the outside, the second connector is provided with a cap, and the cap is received within the closure lid Surrounded by the material, the absorbent material has a space for accommodating the cap, which allows the absorbent material to adhere to the cap, thereby allowing the impregnated fungicide to remove the cap from external bacteria Devices are provided that can be protected.

  In a second aspect, the present invention is a method for implanting an external terminal device for at least one catheter inserted through a first skin incision formed in a patient's body so that the central vein can be reached. And inserting a tunneling mandrel into the free end of the catheter, driving the tunneling mandrel into the first skin incision, feeding into the subcutaneous thickness, and leading out through the second skin incision; This forms a subcutaneous tunnel; the catheter is placed in the subcutaneous tunnel; a catheter that is not yet locked to the tunneling mandrel is supplied along the connecting member provided with the subcutaneous cuff, and the connecting member is , Connected to an external terminal device for a permanent catheter; the cuff of the connecting member is placed subcutaneously and a second skin incision is made by stitching Thereby closing the cuff in the subcutaneous position for the period of time required for the fibrous tissue to grow around the subcutaneous cuff, and with such fibrous tissue, the cuff is confined within the subcutaneous tissue and within the subcutaneous tissue. There is provided a method of removing the tunneling mandrel and adjusting the length of the catheter; coupling the tap to the catheter and placing the tap in the device.

  It is understood that the cuff confined within the subcutaneous tissue is part of the connection member of the external terminal device, and that the cuff does not belong to a catheter that is slid through the connection member. Should. Thus, for catheter replacement, it is sufficient to open the device, remove the tap, disconnect the catheter, and remove the catheter after the guidewire is placed in the lumen.

  After removing the old catheter, a new catheter is placed using the same guide wire temporarily left in place. The new catheter is then sized relative to the old catheter dimensions and then connected to the tap. The above operation is performed without performing anesthesia, without performing surgery, and without causing physical or mental pain to the patient. Further, when removing one tap, this removal can be performed using a tap that is not yet locked to the catheter. After the tap is released, the tap lumen is aligned with the catheter lumen.

1 is an overall perspective view showing a first embodiment of a device according to the present invention, showing a closed state; FIG. It is a perspective view which decomposes | disassembles and shows the device of FIG. 1 partially. It is a perspective view which decomposes | disassembles and shows the device of FIG. It is a top view which decomposes | disassembles and shows the device of FIG. It is a side view which decomposes | disassembles and shows the device of FIG. It is a perspective view which expands and shows partially disassembled the internal structural member of the device of FIG. FIG. 4 is an overall exploded perspective view showing a second embodiment of a device according to the present invention. FIG. 8 is a perspective view showing the tap in the device of FIG. 7 with a longitudinal section, the tap being shown removed from the catheter. FIG. 8 is a perspective view of the tap in the device of FIG. 7 with a longitudinal cross-section, the tap being shown coupled to a catheter. It is a figure which shows through perspective a part of human body by which the device by 1st Embodiment of this invention is arrange | positioned.

  For further features and advantages of the present invention, read the following description of a non-limiting preferred embodiment of an external terminal device for a permanent catheter, illustrated by way of non-limiting example, with reference to the accompanying drawings Will be clearer.

  In the general perspective view in FIG. 1, a first embodiment of an external terminal device for a permanent catheter according to the present invention is indicated by reference numeral 1 with respect to a dual lumen catheter or a two-way catheter. In FIG. 1, the catheter is indicated by reference numeral 2, and the subcutaneous cuff 3 is shown surrounding the connecting member 4 protruding from the base housing 5 of the device 1. Is indicated by 6. The closure lid of device 1 is indicated by reference numeral 20.

  In the partially exploded perspective view in FIG. 2, the closure lid 20 has been removed from the remainder of the device. A lateral groove 7 is formed in the cover member 6. The lateral groove 7 allows the device closure lid 20 to be snapped on as shown in the following figures. What is indicated by the reference numerals 8 and 9 are knobs of taps 26 and 27 housed inside the base housing 5, as further illustrated in the exploded perspective view of FIG. Notches 10 and 11 are provided in the knobs 8 and 9 of the taps 26 and 27, respectively. As will be described later, the notches 10 and 11 function to drive the knobs 8 and 9 to rotate. Furthermore, the knobs 8, 9 essentially display the open or closed state of the respective taps 26, 27. On the surface of the tap that faces the processing equipment, the taps 26 and 27 are provided with luer lock connectors 12 and 13 with caps 14 and 15. A fixing screw, indicated generally by 18, fixes the cover member 6 to the base housing 5.

  The closure lid 20 functions to protect the knobs 8, 9, luer lock connectors 12, 13, also referred to below as second connectors, and the respective caps 14, 15. A projection 19 having a shape of a screwdriver tip is formed on the front surface of the closing lid 20. The protrusion 19 is configured to be inserted into the notches 10 and 11. Thereby, the protrusion 19 can rotationally drive the knobs 8 and 9 of the taps 26 and 27.

  In FIG. 3, in addition to the components already described, a ridge 21 on the lower edge and a ridge 22 on the upper edge of the closing lid 20 are shown. When the closure lid 20 is in place, the ridge 21 is configured to snap onto a groove 47 (shown in the exploded side view of the device in FIG. 5) formed in the bottom surface 48 of the base housing 5. The ridge 22 is configured to be snapped to the above-described groove 7.

  A first connector, indicated by reference numeral 23, connects the catheter 2 to the taps 26, 27 via small pipes 24, 25 that can be die cast to the taps. As described above, the catheter 2 is a double lumen catheter, and the connector 23 inside the base housing 5 of the device 1 is a double lumen connector. The two passages are obtained by a partition indicated by reference numeral 35.

  The cover member 6 is formed with a plurality of holes 29 for allowing the plurality of screws 18 to pass therethrough. The screw 18 is intended to be screwed into each of the holes 31, 32, 33 formed along the periphery of the base housing 5. Although not limited, the base housing 5 has a prismatic shape, and has a bottom surface 48 and side walls shown in the plan view of FIG. The back wall facing the catheter 2 is indicated by reference numeral 44. The side walls are indicated by reference numerals 43 and 45, and the front wall of the base housing 5 that faces the equipment when the device 1 is used is indicated by reference numeral 46.

  The collar 34 of the connecting member 4 extends through the back wall 44 of the base housing 5 and extends into the base housing 5 to complete the connection of the connecting member 4 to the back wall 44.

  As will be described in detail later, the inner central partition wall 36 is formed upright from the bottom surface 48 of the base housing 5. This is to anchor the tap body to the base housing 5.

  As shown in FIG. 3 again, reference numeral 72 is a silver wire emerging from the subcutaneous cuff 3. The silver wire is for the catadyne effect or for purification by the catadyne process. A prismatic disposable absorbent material 73 is accommodated in the closing lid 20. The absorbent material 73 is impregnated with a bactericidal agent (or sterilizing agent or preservative). The disposable absorbent material 73 is, for example, sponge-like and engages the caps 14, 15 thanks to the two corresponding spaces 16, 17 formed in the material 73. The diameter of the spaces 16 and 17 is slightly smaller than the diameter of the caps 14 and 15. Thereby, an absorptive material can stick to a cap and can protect a cap by the action of a disinfectant.

  The components already shown in the previous drawings with respect to the first embodiment of the invention are also shown for purposes of clarity in the orthogonal views of FIGS. 4 and 5.

  In particular, the housing of taps 26 and 27 is shown. The external body of the tap has a polygonal shape, and dovetail-shaped protrusions 28 are provided on two side surfaces of the external body located on opposite sides. Correspondingly, dovetail-shaped grooves 41 and 42 are formed on both side surfaces 43 and 45 of the base housing 5 and on the central partition wall 36. The protrusion 28 forms a tenon, and the grooves 41 and 42 form a tenon hole. Thereby, the mutual lock connection between the taps 26 and 27 and the base housing 5 is formed.

  A circular opening 30 (FIG. 4) is provided in the cover member 6 so that the knobs 8 and 9 of the taps 26 and 27 can be operated. Semicircular openings 37, 38, 39 and 40 are formed in the cover member 6 and the front wall 46 of the base housing 5. The semicircular openings 37, 38, 39, 40 can form a pair of circular openings, through which the luer lock connector or second connector 12, 13 can be led.

  The taps 26 and 27 are illustrated in detail in FIG. FIG. 6 is an exploded perspective view showing the constituent members inside the device in an enlarged manner and with a partial cross section. In particular, a dovetail-shaped protrusion 28 and a spherical blocking member 50 are shown. The spherical closure member 50 is conventional in operation within the tap. Therefore, detailed description is omitted. As shown in FIG. 6, the connection based on the arrow F between the catheter 2 and the internal connector 23 is completed by a hose clamp 49.

  Illustrated by an exploded perspective view in FIG. 7 is a second embodiment of an external terminal device according to the present invention for two single lumen catheters. This second embodiment is illustrated in detail in a perspective view in FIGS. 8 and 9 by a longitudinal section. In these drawings, the same reference numerals are assigned to the same or similar components as those in the first embodiment of the present invention.

  In FIG. 7, in addition to the components already described, the base housing of the second embodiment of the device is indicated by reference numeral 51 and the single lumen catheter is indicated by reference numerals 52 and 53. Two subcutaneous cuffs similar to the subcutaneous cuffs in the first embodiment are indicated by reference numeral 3 and the associated connecting members are respectively indicated by reference numeral 4. The connecting member 4 is integral with the wall 54 of the base housing 51. Of the connecting member 4, the inner end of the base housing 1 is indicated by reference numerals 62 and 63. Catheters 52, 53 connected to the respective taps 66, 67 project from such ends of the connecting member 4 in the base housing. The taps 66 and 67 are received inside the base housing 51 by tenons and mortises similar to those described above with respect to the first embodiment. The mortise is formed in a central partition wall 64 that extends over the entire length of the base housing 5. In FIG. 7, only a single connector, indicated by reference numeral 65, projects from the taps 66 and 67 toward the catheters 52 and 53. The connection between the catheter and the first connector is completed by a hose clamp 49, as in the first embodiment of the device. In particular, the situation before the connection between the catheter 53 and the first connector 65 is shown in FIG. 8, and the situation after the connection is shown in FIG.

  In FIG. 10, which shows a portion of the human body in perspective, the central vein is indicated by reference numeral 69 and the first skin incision of the catheter 2 is indicated by reference numeral 70 for illustrative purposes. The inner end of the catheter 2 is in the vein 69, the myocardium is indicated by reference numeral 71, and the second skin incision is indicated by reference numeral 68. Here, the second skin incision is the lead-out point of the catheter 2 from the subcutaneous track.

  The device embedding according to the present invention will be described below with reference to FIG. For reasons of simplicity, by way of example, a dual lumen catheter 2 is assumed and the device 1 is assumed to be implanted in a patient's body.

  The catheter 2 is introduced using the well-known Seldinger method. At the end of this operation, the catheter 2 is withdrawn on the one hand from a first skin incision 70 formed for access to the central vein 69, and on the other hand the catheter 2 is in the same vein lumen. It stays inside and stays well. At this point, a tunneling mandrel (not shown) is inserted into the free end of the catheter. The tunneling mandrel is inserted into the subcutaneous tissue layer at the location where the first skin incision 70 is formed corresponding to the central vein 69 and is fed into the same subcutaneous tissue layer by a few centimeters, after which From the second skin incision 68 is led onto the skin surface. Within this track, the catheter 2 follows the tunneling mandrel to which it is connected, so that at the end of this operation, the catheter is fully placed in its newly formed subcutaneous tunnel. Yes.

  The tunneling mandrel is appropriately shaped so as not to interfere with the device and penetrates the external device (the coupling member and the base housing). A connecting member is placed in the skin incision and stitching is performed to confine the cuff in the subcutaneous layer. At this point, the tunneling mandrel is removed and the catheter length is adjusted.

After removing the tunneling mandrel,
While referring to the centimeter display printed on the catheter surface and further checking the functionality of the catheter, i.e. checking whether the catheter ensures proper blood flow without causing the catheter to fail, By determining the length of the embedded portion and by determining the length of the removed portion of the catheter 2, the catheter 2 is accurately positioned. Such a check can be performed, for example, using a temporary connection that can simulate dialyzer equipment. After this, the catheter is connected to the device 1. Advantageously, the device is provided as a medical kit comprising a plurality of components separated from each other. Thus, the device does not need to be opened because it has already been opened. After connecting the catheter to the tap, the components are assembled and the device is finally closed.

Returning to FIG. 3, the device 1 is opened by removing the closure lid 20.
Further, the cover member 6 is removed from the base housing 5 by releasing a screw 18 for connecting the cover member 6 to the base housing 5. Furthermore, the taps 26, 27 are removed from the base housing 5 by sliding the taps 26, 27 along the dovetail-shaped grooves 41, 42. The catheter 2 is passed through the connecting member 4 with the subcutaneous cuff 3 and is slid along the connecting member 4 until the catheter 2 emerges again beyond the internal collar 34 of the connecting member 4. Thereafter, the hose clamp 49 (FIG. 6) is slid along the catheter 2. The cuff 3 is placed under the skin and the second skin incision 68 is closed by a suitable stitch. Thus, the cuff 3 can be fixed at the subcutaneous position for a necessary period until the fibrous tissue grows around the subcutaneous cuff 3. Such fibrous tissue locks the cuff 3 in the subcutaneous tissue and anchors it in the subcutaneous tissue.

  In this way, all of the device 1 is anchored, as illustrated in FIG. Here, the length of the catheter 2 is reduced to a desired length in consideration of the above functional evaluation. After that, by checking that the taps 26 and 27 are closed by manually operating the knobs 8 and 9, that is, the notches 10 and 11, using the projections 19 provided on the closing lid 20, the catheter 2 is connected to the taps 26 and 27. When connecting the catheter 2 to the taps 26 and 27, the connector 23 is inserted into the end portion of the catheter 2 that protrudes from the collar 34. In this case, a septum 35 that separates the two flow paths of the catheter is inserted into the notch of the connector 23. Increased reliability in preventing accidental disconnection by securing the hose clamp 49 at the portion of the catheter 2 that is inserted and connected into the connector 23 of the taps 26, 27. Is done.

  After the taps 26, 27 are placed inside the base housing 5, the luer lock connectors 12, 13 are properly placed and project from the openings in the base housing 5 through the openings 37, 38, 39, 40 (FIG. 3). Let The cover member 6 is fixed to the base housing 5 by screwing the plurality of screws 18 into the corresponding holes 29 respectively. After the absorbent material 73 impregnated with the bactericidal solution is inserted, the closure lid 20 is snapped. This can build a safer barrier against bacterial attack and limit the occurrence of infectious diseases.

  The entire device 1 is covered by a medical band. Thereby, the position shift of the device 1 can be prevented until the next use, and further, the device can be protected from external contamination.

  In use after the device is implanted in the patient, the device is connected to the dialyzer by connecting the blood line of the dialyzer to the standard luer lock connector of the device. First of all, the medical band protecting the device must be removed. After the closing lid 20 is removed, the caps 14 and 15 of the luer lock connectors 12 and 13 are removed. After connecting the syringe to the connector 12 and opening the knob 8, some of the patient's blood is aspirated. Thereby, it can confirm that a catheter operates. Then, the antithrombotic solution left over from the previous use is removed. Thereafter, the knob 8 is closed, the syringe is removed, and the blood line of the dialysis circuit is directly connected to the connector 12. Such an operation is repeated for the connector 13 and the knob 9.

  At the end of the procedure, the above operations are repeated in the reverse order. Prior to the placement of the caps 14,15, the caps 14,15 are infused with an appropriate amount of saline to clean the connector and catheter, and within the catheter until the next procedure. An appropriate amount of anti-thrombotic solution is injected to prevent clotting from occurring. (Such antithrombotic solutions are also referred to as filling solutions or priming solutions and must fill the “tap-catheter” system. However, entry into the blood circulation is not allowed.) Prior to closing the device with the closure lid 20, a new absorbent material 73 impregnated with a bactericidal solution is placed inside the closure lid 20.

  It will be appreciated that by using the device according to the invention, the exchange of the catheter 2 is simple when required. After opening the device 1 by removing the closure lid 20, the connecting member 4 remains attached to the patient's body via the subcutaneous cuff 3 by removing the cover member 6 and the taps 26, 27 from the base housing 5. And the catheter to be exchanged is removed along the guide wire. The new catheter 2 is then inserted into the same central vein by the same guide wire and slid through the same connecting member 4. When changing the catheter, manipulation on the blood vessels is not necessary, which is dangerous for the patient and difficult for the surgeon.

DESCRIPTION OF SYMBOLS 1 Device 2 Catheter 3 Subcutaneous cuff 4 Connection member 5 Container, base housing 6 Cover member 8 Knob 9 Knob 10 Long notch 11 Long notch 12 Second connector 13 Second connector 14 Cap 15 Cap 16 Space 17 Space 19 Protrusion 20 Occlusion Lid 23 First connector 26 Tap 27 Tap 37 Opening 38 Opening 49 Hose clamp 51 Container, base housing 52 Catheter 53 Catheter 65 First connector 66 Tap 67 Tap 72 Silver wire 73 Absorbent material

Claims (10)

An external terminal device for a permanent catheter,
On the one hand, it can be connected to at least one catheter (2; 52, 53) and on the other hand an obstructing lid (20) with a disposable absorbent material (73) impregnated with a disinfectant. Comprising a container that can be coupled to)
The container may, two taps; houses the (26, 27 66, 67),
The tap, operable knob (8,9) is provided from the outside of the container,
The tap comprises on the one hand a first connector (23; 65) for connection to the catheter (2; 52, 53) and on the other hand for connection to an external device. A second connector (12, 13) protruding from the container;
The first connector (23; 65) is connected to the catheter (2; 52, 53) by at least one connecting member (4);
The coupling member (4), together with projects the container or al, holding the subcutaneous cuff (3) that is configured to be placed in the subcutaneous tissue of the patient's body outside,
The second connector (12, 13) is provided with a cap (14, 15),
The cap (14, 15) is surrounded by the disposable absorbent material (73) received in the closure lid (20);
The absorbent material comprises a space (16, 17) for accommodating the cap (14, 15), whereby the absorbent material (73) can be in close contact with the cap, A device characterized in that the cap can be protected from external bacteria by the impregnated germicide. The device of claim 1, wherein
The first connector (23; 65) is coupled to the at least one coupling member (4) by coupling within the container;
This connection is ensured by a hose clamp (49) surrounding the engagement ends of the first connector (23; 65) and the at least one connecting member (4). . The device of claim 1, wherein
The subcutaneous cuff (3) has a silver wire (72) protruding from the interior of the material to the surface;
A device characterized in that the silver wire is for purification . The device of claim 1, wherein
The container comprises a base housing (5; 51) and a cover member (6);
The cover member (6) is provided with an opening (37; 38) for accessing the knob (8, 9) so that the tap (26, 27; 66, 67) can be operated. Feature device. The device of claim 4, wherein
A device characterized in that the cover member (6) is detachable. The device of claim 1, wherein
Each of the knobs (8, 9) has a long notch (10, 11);
The long notch displays the open / closed state of each tap (26, 27; 66, 67),
The closure lid (20) has a protrusion (19) having the shape of a screwdriver tip;
A device characterized in that the projection is engageable with the long notch (10, 11) of the knob (8, 9). The device of claim 4 , wherein
The base housing (5; 51) has a polygonal shape, and has a side wall (43, 45) and a rear wall (44; 54) having at least one passage for the connecting member (4). And a front wall (46) and at least a partial central partition (36; 64). The device of claim 7, wherein
The side walls (43, 45) and the central partition (36; 64) have grooves (41, 42),
A device characterized in that the groove and the corresponding protrusion (28) formed on the body of the tap (26, 27; 66, 67) form a fixed joint. The device of claim 7, wherein
Semi-circular openings (37, 38, 40 ) are provided in the cover member (6) and the front wall (46) of the base housing (5; 51),
These semicircular openings form a circular insertion opening through which the second connector (12, 13) is inserted so that the second connector (12, 13) can be connected to an external device. Feature device. The device of claim 7, wherein
Lateral grooves (7, 47) are provided on the cover member (6) and the front wall (46) of the base housing (5; 51),
Device according to claim 1, characterized in that the lateral groove is snap-engaged with a corresponding projection (22, 21) formed on the closure lid (20).

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